May have info. on closed case, considered "drowning"?

Last week,Wed. night, my son and I went for our routine sunset bike ride down to the historical Cement Ship and pier. There were 4-5 commercial fishing boats out and the occasional barking harbor seal.After sunset,we started riding home when I heard something different than a seal. I asked my son if he'd heard it too. We rode back towards the pier, which was oddly still open,usually like clockwork they're locking the gates right at sunset. We rode out on the completely empty pier and found one 5 gallon bucket of water with one little fish in it and a couple empty beer bottles.The waves were getting bigger therefore louder so we couldn't hear much. Completely dark and freezing, we started riding home when my son and I both heard someone distinctly crying "help, i'm hurt". We rode back and forth for 45 min. shinning our flashlights, calling out "hello" while waiting for a now hour or more late ranger to arrive to close this place up. I thought it was coming from around the cement ship, with the bucket and such maybe someone fell off and the ranger went to radio a fishing boat for help. My son said "no mom, it's coming from that fishing boat over there". One of the commercial boats was idling slow and did a couple of circles. I could see movement of someone on it and heard a lot of clanging,metal to metal. Maybe someone fell off and they were circling for him. Then the boat headed back out to sea. Figuring everything was handled, we again rode towards home when again we heard a gargled, faint gasping noise. A ranger finally showed and we told him what had been going on and our concern. He didn't take it too seriously asking me "are you sure it wasn't a seal" I explained i've lived in the same house down the street for 40 years and I know the sound a seal makes and this wasn't the case. Sometimes the seals would be barking but other times we were certain someone was apparently in distress. He told us he would "give it a look".He didn't doent it either which after some research, I found out they are required to do. Still feeling weary about it all, I looked for something in the newspaper and on tv. On Friday, I saw in the local news on the internet" missing x x x man found dead. All the paper said was that he drown and two fishermen found him. Here's the kicker; on Thurs. morning the fire dept. was called because of a car on fire at the same place he was found, AND IT WAS HIS CAR. That was it! They aren't looking in to it or find it peculiar that one day his car is in flames,the next he's found dead.He drown, really?Is it me or does this sound "fishy"?I would like to tell my story to someone but I don't think the cops will do anything because,well I just don't!Sad but true, I've never had a positive experience with them on either side of the spectrum.I've been told the same by many so now im guessing who I go to. I've been told to go above the police,and above them and so on. Great, but who the heck would that be?